In order to study the influence of grid-baffles upon heat transfer and resistance performance of stator’s water cooler for turbo-generators

the flow passage in shell side of water cooler with grid-baffles has been analysed

and modeling test study being carried out by using grid-baffles and spirally corrugated tubes as reinforced heat exchange device to obtain heat transfer and resistance performance of the water cooler.Using grid-baffles as supporting structure of the tube bandles not only can reduce the flow induced vibration

but also can increase heat transfer coefficient

and decrease the pressure drop.Along with decreasing the space between grid-baffles

the heat transfer performance of water cooler has been enhanced

but the resistance being correspondingly increased

therefore

the space between grid-baffles should be reasonably selected

to realize optimization of structure and performance for the water cooler

satisfying better the actual operating condition of turbogenerator.